Sentences with phrase «estimate global extinction»

Not exact matches

This could be occasion to paint a bleak picture: The current rate of global diversity loss is estimated to be a 1000 times higher than the extinction that would occur naturally.

For example, the harlequin frog, golden toad, and an estimated two - thirds of the 110 or so other brightly - colored toad species once plentiful in the mountains of Costa Rica have vanished, with a pathogen outbreak tied to global warming believed to be a key factor in their extinction.

Based on regional studies, the Intergovernmental Panel on Climate Change (IPCC) estimated that 20 — 30 % of the world's species are likely to be at increasingly high risk of extinction from climate change impacts within this century if global mean temperatures exceed 2 — 3 °C above pre-industrial levels [6], while Thomas et al. [5] predicted that 15 — 37 % of species could be «committed to extinction» due to climate change by 2050.

They estimate that if global warming exceeds 1.6 °C above preindustrial, 9 — 31 percent of species will be committed to extinction.

With global warming of 2.9 °C, an estimated 21 — 52 percent of species will be committed to extinction.

Recent studies estimate that even for conservative global mean temperature increases, between 11 % and 34 % of species alive today could be threatened with extinction.

For example, the harlequin frog, golden toad, and an estimated two - thirds of the 110 or so other brightly - colored toad species once plentiful in the mountains of Costa Rica have vanished, with a pathogen outbreak tied to global warming believed to be a key factor in their extinction.

Tegen, I., P. Hollrig, M. Chin, I. Fung, D. Jacob, and J. Penner, 1997: Contribution of different aerosol species to the global aerosol extinction optical thickness: Estimates from model results.

«Based on all above findings and our compilation (Figure 4.4, Table 4.1 ″) we estimate that on average 20 % to 30 % of species assessed are likely to be at increasingly high risk of extinction from climate change impacts possibly within this century as global mean temperatures exceed 2 °C to 3 °C relative to pre-industrial levels (this chapter).

When you here the phrase «endangered species» undoubtedly the cute, cuddly and carnivorous pop to mind, but according to new global analysis by The Royal Botanic Gardens, Kew, London's Natural History Museum and the IUCN shows that one in five of the world's plant species are threatened with extinction — in other words, about 76,000 of the world's estimated 380,000 species of plants have difficult times ahead.